Among the lists of foods that people are willing to try their rabbits on is flour. Can rabbits eat flour straight from the bag? It may not do them much harm if they actually wanted to eat it, but it’s not something I’d recommend.
Flour is an ingredient in a lot of foods that are safe for bunnies, such as crackers, cereals, and other treats that are only to be given to them in moderation. So either way, you should only be giving them a small bit of flour in any form once a week or so.
Keep your rabbits on the stuff that’s good for them. This means Timothy hay, pellets specially formulated for rabbits, some fresh vegetables, and fresh water. Keep the treats to bits of fruit and some different vegetables. This will keep your bunny healthy, and happy.